Î36 



ZOOLOGY OF THE FAR EAST. 



Yokohama (Berlin Mus.), a large male from Shanghai (Haberer coll.) and three rather 

 small females from the same locality (Annandale coll.). 



The carapace in these specimens yields the following measurements (in mm.) : — 



LOCAUTY. 







ui 



' 





i 

 xn 





«1 



a- 



Yodo R., ur. Osaka 



<S 



31-8 



33"3 



30-5 



=, 



1 ^ 



25-9 



27'I 



24-1 



„ .. 



9 



21-9 



22-0 



20'2 



>. ,, .. 



d' 



IQ'O 



18-4 



I7'0 



Yokohama . , 



<S 



32-6 



337 



31-0 



Shanghai 



<S 



32-0 



31-8 



299 



» 



? 



197 



19-5 



177 



„ 



9 



19-9 



I9"3 



17-4 



„ 



9 



15-9 



15-2 



i3'6 



It will be seen that as regards the proportion between length and extra-orbital 

 breadth there is scarcely any difference between Japanese and Chinese specimens ; 

 but in large males from Japan the breadth at the base of the penultimate legs is a 

 trifle greater than that at the extra-orbital angles, whereas the reverse is found in the 

 large male from Shanghai. The difference is an extremely small one. 



In large Japanese specimens the front is much more deeply excavate in dorsal 

 view than in the large male from Shanghai, but this character is variable in smaller 

 specimens from both localities. 



In the large male from Shanghai the outer surface of the palm is obscurely 

 granulate in its lower half, the upper half being nearly smooth. In the large males 

 from Japan it is coarsely tuberculate both above and below. The vertical row of 

 large tubercles on the inner face of the palm in the latter specimens is represented in 

 example from Shanghai by a number of much smaller tubercles not arranged in a 

 definite row. 



The collection seems to indicate that while Japanese and Chinese individuals of 

 small or medium size are altogether indistinguishable, large males from the two coun- 

 tries exhibit certain small but possibly constant differences. The material at my dis- 

 posal is not sufficient to indicate the range of normal variation in adults. 



The specimens from Japan were presented by Dr. S. Yoshida ; they were obtained 



